Home / 128,693.24-177,596.16-72,104.48

Finding the Fourth Proportional to 128,693.24, 177,596.16 and 72,104.48

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Solution

The fourth proportional to 128,693.24, 177,596.16 and 72,104.48 is: 99,503.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,693.24 : 177,596.16 = 72,104.48 : x
  2. Step 2: Convert to fraction form
    128,693.24/177,596.16 = 72,104.48/x
  3. Step 3: Cross multiply
    128,693.24x = 177,596.16 × 72,104.48
  4. Step 4: Simplify right side
    128,693.24x = 12,805,478,680.00
  5. Step 5: Solve for x
    x = 12,805,478,680.00/128,693.24
  6. Step 6: Final answer
    x = 99,503.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.